Season 4 of The Real Housewives of Beverly Hills is getting a cast makeover. Adrienne Maloof has confirmed she's leaving the hit Bravo show.

"To my loyal fans . . . It was time to exit RHOBH. The show served as a wonderful platform, stay tuned!" she tweeted Monday, March 4. The hotel mogul also linked to a blog post that had a slightly longer message to her fans.

"The show served as a wonderful platform for all the amazing projects that I have in the works," she wrote. "I am forever grateful to my fans, thank you for your support, and stay tuned!"

During the taping of Season 3, Maloof went through a divorce from husband Paul Nassif, and became a single mother to sons Gavin, 9, and twins Christian and Colin, 6. She also had several feuds with her cast members, particularly Glanville, 40. After the Drinking & Tweeting: and Other Brandi Blunders author revealed Maloof used a surrogate to have her twins, she sent Glanville a letter threatening legal action.

Even without Maloof present at the reunion taping to discuss her arguments with Glanville, it's sure to be filled with drama. On Saturday, Kyle Richards tweeted a photo of herself posing with the Real Housewives of Beverly Hills reunion host Andy Cohen and wrote, "Brutal reunion shoot but I love this man."